7. Some Correlations Between Molecular and Cholesteric Handedness

  1. Mark M. Green2,
  2. R. J. M. Nolte3 and
  3. E. W. Meijer4
  1. Giovanni Gottarelli and
  2. Gian Piero Spada

Published Online: 14 MAY 2004

DOI: 10.1002/0471471895.ch7

Materials-Chirality, Volume 24

Materials-Chirality, Volume 24

How to Cite

Gottarelli, G. and Spada, G. P. (2003) Some Correlations Between Molecular and Cholesteric Handedness, in Materials-Chirality, Volume 24 (eds M. M. Green, R. J. M. Nolte and E. W. Meijer), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471471895.ch7

Editor Information

  1. 2

    Polytechnic University, Brooklyn, New York, USA

  2. 3

    Laboratory of Organic Chemistry, Department of Organic Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED, Nijmegen, The Netherlands

  3. 4

    Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands

Author Information

  1. Alma Mater Studiorum—Università di Bologna, Dipartimento di Chimica Organica “A. Mangini,” Via S. Donato 15, 40127 Bologna, Italy

Publication History

  1. Published Online: 14 MAY 2004
  2. Published Print: 25 SEP 2003

Book Series:

  1. Topics in Stereochemistry

Book Series Editors:

  1. Scott E. Denmark and
  2. Jay Siegel

ISBN Information

Print ISBN: 9780471054979

Online ISBN: 9780471471899

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Keywords:

  • lyotropic cholesterics formed by helical polymers;
  • thermotropic-induced cholesterics;
  • empirical approach;
  • theoretical approach;
  • biaryl moiety;
  • chiral molecules different from biaryls

Summary

Although cholesteric handedness is obviously related to the chirality of the molecules that compose the phases, the relationship between the two properties is in general not established. In some cases, however, it is possible to correlate the two quantities using simple models. In the field of thermotropic liquid crystals, the handedness of cholesterics induced by chiral dopants can be related to the dopant stereochemistry and even calculated a priori for selected classes of dopants with limited conformational mobility. In the field of lyotropic cholesterics formed by helical polymers, it is often possible to correlate macromolecular and cholesteric helicity by a helix interaction model.